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TY - CPAPER AU - Sulimov, A.A. TI - RF Analysis of Equator Welding Stability for the European XFEL Cavities J2 - Proc. of International Conference on RF Superconductivity (SRF2015), Whistler, BC, Canada, Sept. 13-18, 2015 AB - In order to guaranty a sufficient High Order Modes (HOM) damping in the European XFEL cavities, a detailed analysis of the mechanical cavity production was performed. The mechanical measurements are precise enough to control the shape of cavity parts, but cannot be used for a welded cavity. To estimate the shape deformation during equator welding, the eigenfrequencies of cavity cells are compared with frequencies of cavity parts. This simple RF analysis can indicate irregularity of 9 equator welds and was used in addition to control of mean values for longitudinal and transverse deformations. PB - JACoW CY - Geneva, Switzerland SP - 1272 EP - 1273 KW - cavity KW - controls KW - linac KW - HOM KW - factory DA - 2015/12 PY - 2015 SN - 978-3-95450-178-6 DO - 10.18429/JACoW-SRF2015-THPB066 UR - http://srf2015.vrws.de/papers/thpb066.pdf ER -